Jawabanmu

2014-05-09T09:01:58+07:00
2014-05-09T11:15:59+07:00
Dik: n = 30, t = 10 s, v = 15 m/s
Dit: Panjang Gelombang?
Peny:
f = 30/10 = 3
Jadi, panjang gelombang = v/f = 15/3 = 5 m